From yesterday’s 4th round of the European Club Cup: Swiss Fide Master Moritz Collin (white) won convincingly, after Ugur Barkin Tahaoglu (black) grabbed a seemingly free pawn, playing Qxc4?? What did Collin see Tahaoglu didn’t? White to move. German Grandmaster Matthias Bluebaum (white) secured a win for his Hungarian team. How did he capitalise on the blunder of GM Etienne Bacrot (black) after Bxh2?? White to move. Hungarian Super Grandmaster Richard Rapport (white) is winning, but still black has some threats to prevent white’s f-pawn promotion. Or has he? How did Rapport still gain material advantage against IM Shogdzhiev (black)? White to move.